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Hace 15 horas · Amniotes. The first fully terrestrial vertebrates were reptilian amniotes — their eggs had internal membranes that allowed the developing embryo to breathe but kept water in. This allowed amniotes to lay eggs on dry land, while amphibians generally need to lay their eggs in water (a few amphibians, such as the common Suriname toad, have evolved other ways of getting around this limitation).
Hace 15 horas · Ice is water that is frozen into a solid state, typically forming at or below temperatures of 0 °C, 32 °F, or 273.15 K.As a naturally occurring crystalline inorganic solid with an ordered structure, ice is considered to be a mineral.Depending on the presence of impurities such as particles of soil or bubbles of air, it can appear transparent or a more or less opaque bluish-white color.
Hace 15 horas · This is a list of the bird species of India and includes extant and recently extinct species recorded within the political limits of the Republic of India as defined by the Indian government. There have been 1377 species recorded as of 2023, of which 81 are endemic to the country. 212 species are globally threatened. The Indian peafowl (Pavo cristatus) is the national bird of India.
